Patent · US Active

Method for generating finest particles and jet mill therefor as well as classifier and operating method thereof

US7866582B2 · kind B2 · utility

5Cited by

1References

5Claims

0Family size

Assignees

Netzsch-Condux Mahltechnik GmbH · DE
Roland Nied · DE

Inventor

Roland Nied · Neusäß, DE

Key dates

Filing date	Apr 16, 2009
Grant date	Jan 11, 2011
Priority date	—
Expiry date	Apr 16, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB07B11/04
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method and apparatus for generating fine particles via a jet mill with an integrated dynamic air classifier, wherein the rotational speed of a classifying rotor of the air classifier and the inner amplification ratio V (=Di/DF) are so selected, set or controlled that the circumferential velocity of the operating medium at an immersion pipe or outlet connection assigned to the classifying wheel reaches up to 0.8 times of the velocity of sound of the operating medium. A dynamic air classifier with a classifying wheel is additionally created, wherein a source for an operating medium is a fluid, more preferably a gas or a vapour, which has a higher and more preferably a substantially higher velocity of sound than air.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.